*{margin:0;padding:0;}
li{list-style: none;}
body{background-color: #efeff2;}
header{
	height: 60px;
	background-color: #3e3d3d;
	box-sizing: border-box;
	padding-top: 15px;
	padding-left: 50px;
	margin-bottom: 30px;
	display: flex;
	justify-content: space-between;
	position: relative;
}
header div{
	width: 210px;
	height: 60px;
}
header .lef img{
	display: block;
	width: 173px;
	height: 32px;
}
header .rig{
	position: absolute;
	right: 0;
	top: 0;
	line-height: 60px;
	color: white;
	text-align: center;
}
section{
	height: 500px;
}
.main{
	width: 900px;
	height: 500px;
	margin: 0 auto;
	background-color:white;
	border-radius: 10px;
	padding-top: 10px;
}
.top{
	width: 72px;
	height: 54px;
	margin: 20px auto;
}
.top img{
	height: 100%;
	width: 100%;
}
.cen,.bottom{
	height: 60px;
	width: 400px;
	margin: 20px auto;
}

input{
	height: 40px;
	width: 320px;
	border: none;
	outline: none;
	border-radius: 8px;
	border: 1px solid gray;
	text-indent: 10px;
}
label{
	text-align: center;
	line-height: 40px;
	font-size: 15px;
	float: left;
	margin-right: 10px;
}
p{
	font-size: 14px;
	color: red;
	margin-top: 5px;
	margin-left: 70px;
	display: none;
}
.last a{
	width: 320px;
	height: 40px;
	display: block;
	background-color: red;
	color: white;
	border-radius: 8px;
	text-align: center;
	line-height: 40px;
	text-decoration: none;
	margin: 0 auto;
	position: relative;
	left: 30px;
}
.du{
	width: 320px;
	height: 40px;
	margin:0 auto;
	position: relative;
	left: 30px;
	border-radius: 8px;
	line-height: 40px;
	font-size: 15px;
}
.du>input{
	width: 12px;
	height: 12px;
	margin: 0 10px;
}
.du>a{
	text-decoration: none;
	color: blue;
}